his article outlines the creation of computer game platform and media format Linked Open Data (LOD) controlled vocabularies by the Game Metadata and Citation Project (GAMECIP). We discuss the need for more consistent and accurate information in computer game library records, define what we mean by “platform” and “media format,” and then elaborate on our research process and issues encountered along the way. Our vocabularies were constructed with the Simple Knowledge Organization System to take advantage of its properties and hierarchical structure. After describing our LOD schema in detail, we conclude with a discussion of future work and a call for more collaboration.